▎ 摘　　要

NOVELTY - Preparing nitrogen-doped graphene aerogel loaded ferrocene-polyaniline composite electrode, comprises dissolving 0.04-0.06 mol 1,1'-ferrocenedicarboxylic acid chloride in dichloromethane under the protection of nitrogen, adding 0.08-0.12 mol aniline and 38-42 ml triethylamine into a flask equipped with a magnetic stirrer and a reflux device, stirring at room temperature for 4-6 hours, washing and centrifuging the product multiple times, and drying in a vacuum oven to obtain 1 ,1'-ferrocenylaniline monomer, dispersing single-layer graphene oxide powder in water and ultrasonically bathing in ice for 0.5-1 hour, mixing the ferrocene-polyaniline-loaded nitrogen-doped graphene aerogel and conductive carbon black and adding nitrogen-methylpyrrolidone solution of polyvinylidene fluoride and uniformly mixing to prepare a slurry, coating the above slurry on graphite paper, and drying in an oven. USE - The electrode used for selectively removing phosphate and phosphite in water and catalytic oxidation of phosphite (claimed). ADVANTAGE - The electrode has high-selectivity adsorption phosphate and phosphite ion and large adsorption capacity, synchronous high-efficiency catalytic phosphite oxidation, solves the key technical problem that the effect of removing phosphorus in sewage is not good and the function is single(adsorption is main) by the capacitor desalting system. DETAILED DESCRIPTION - Preparing nitrogen-doped graphene aerogel loaded ferrocene-polyaniline composite electrode, comprises (i) dissolving 0.04-0.06 mol 1,1'-ferrocenedicarboxylic acid chloride in dichloromethane under the protection of nitrogen, adding 0.08-0.12 mol aniline and 38-42 ml triethylamine into a flask equipped with a magnetic stirrer and a reflux device, stirring at room temperature for 4-6 hours, washing and centrifuging the product multiple times, and drying in a vacuum oven to obtain 1 ,1'-ferrocenylaniline monomer, (ii) dispersing single-layer graphene oxide powder in water and ultrasonically bathing in ice for 0.5-1 hour, adding ethylenediamine, stirring to make evenly mixed, and adding the mixed solution into the reaction kettle, and performing hydrothermal reaction to obtain reduced graphene oxide hydrogel, placing the obtained hydrogel into a tube furnace after freeze-drying, and performing heat treatment under nitrogen atmosphere to obtain nitrogen-doped graphene aerogel, washing product with ethanol and deionized water, filtering multiple times, and freeze-drying to obtain a nitrogen-doped graphene aerogel loaded with ferrocene-polyaniline, (iii) adding the 1,1'-ferrocenylaniline monomer and aniline monomer to hydrochloric acid and stirring for 0.5-1 hour, dispersing the nitrogen-doped graphene aerogel into the above solution, dissolving ammonium persulfate in hydrochloric acid and dropping, stir for 3-5 minutes, and reacting for 12-24 hours in a vacuum and low temperature environment, and (iv) mixing the ferrocene-polyaniline-loaded nitrogen-doped graphene aerogel and conductive carbon black and adding nitrogen-methylpyrrolidone solution of polyvinylidene fluoride and uniformly mixing to prepare a slurry, coating the above slurry on graphite paper, and drying in an oven.